Merge pull request #245 in SW_PON/linux from...

Merge pull request #245 in SW_PON/linux from bugfix/UGW_SW-22236-ppa-flag-not-set-in-datapath-library-and-skb-dw-fields-are-not-copied to xrx500

* commit 'd2e153b317e65cdd664802d845f8dc7015d3d713':
  UGW_SW-22236: set ppa flag and move skb DWs inside headers_start